[clang] [CIR][X86] Add support for cmpps/cmppd* builtins (PR #228491)

[Mariya Podchishchaeva via cfe-commits]

Fznamznon wrote:

> We should really add ordered/unordered comparisons for CIR and split integer and floating-point compare operations.

@andykaylor , that makes sense to me. However this PR is big enough already. Would that be ok to do that in a separate PR?

I will be OOO next week but I will be happy to do that once I'm back.

https://github.com/llvm/llvm-project/pull/228491